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Статті в журналах з теми "Ecografia 4D"
Huamán Guerrero, Moisés, Moisés Huamán Joo, and J. Arias Rayo. "Ecografía 2D y volumétrica (3D/4D) en el embrión de 5 y 7 semanas." Revista Peruana de Ginecología y Obstetricia 57, no. 1 (April 19, 2015): 29–32. http://dx.doi.org/10.31403/rpgo.v57i202.
Повний текст джерелаCuadros, Marta, Aurora Llanos, Ángela Cuadros, and Román Villegas. "Ecografía 4D para el diagnóstico de malformaciones congénitas." Progresos de Obstetricia y Ginecología 53, no. 7 (July 2010): 267–72. http://dx.doi.org/10.1016/j.pog.2010.03.001.
Повний текст джерелаÁngela Pascual, M., Lourdes Hereter, Betlem Graupera, María Fernández Cid, and Santiago Dexeus. "Ecografía 3D/4D en ginecología: técnica y metodología." Progresos de Obstetricia y Ginecología 49, no. 5 (May 2006): 263–71. http://dx.doi.org/10.1016/s0304-5013(06)72605-x.
Повний текст джерелаMassimo, Ammaniti, Mazzoni Silvia, and Menozzi Francesca. "Cogenitorialitŕ e gravidanza: studio ecografico." INTERAZIONI, no. 2 (December 2011): 49–56. http://dx.doi.org/10.3280/int2011-002005.
Повний текст джерелаHuamán, Moisés. "Avances en las aplicaciones del ultrasonido volumétrico en ginecoobstetricia." Revista Peruana de Ginecología y Obstetricia 55, no. 3 (April 26, 2015): 174–79. http://dx.doi.org/10.31403/rpgo.v55i288.
Повний текст джерелаGarcía-Mejido, José Antonio, Laura Gutiérrez Palomino, Ana Fernández Palacín, and José Antonio Sainz-Bueno. "Aplicabilidad de la ecografía transperineal en 3/4D para el diagnóstico de lesiones del esfínter anal durante el posparto inmediato." Cirugía y Cirujanos 85, no. 1 (January 2017): 80–86. http://dx.doi.org/10.1016/j.circir.2015.09.010.
Повний текст джерелаDíaz Gómez, D., and A. Martín Sánchez. "FLocation of pathological glands in primary hyperparathyroidism." Cirugía Andaluza 31, no. 3 (August 7, 2020): 300–311. http://dx.doi.org/10.37351/2020313.12.
Повний текст джерелаДисертації з теми "Ecografia 4D"
CAVICCHIONI, OTTAVIA. "Possibili applicazioni dell’ecografia 3D/4D in medicina prenatale: esperienza di un singolo centro." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2010. http://hdl.handle.net/2108/1201.
Повний текст джерелаThe aim of this study was to demonstrate and confirm the utility of the wide spectrum of methods provided by the 3D and 4D ultrasound technology, in increasing the detection rate, monitoring, predicting and studying several obstetrical pathologies. Our study involved perinatal pathologies where management could be difficult. In particular we tried to go into diagnosis and prediction of chromosomal abnormalities, pre-eclampsia and severe pre-eclampsia requiring delivery prior to 32 weeks of gestation, some cardiac defect like complete and correct trasposition of the great arteries and the study of cardiac function in normal and growth restricted fetuses. Every scan was performed using a Voluson 730 ultrasound machine.(G. E. Healthcare). We used the traditional bidimensional ultrasound technology to measure distances (cardiac valves, fetal biometry), with color and pulsed Doppler use (blood vessels visualization like uterin arteries and umbilical artery, intracardiac blood flow, uterin arteries waveform visualization, measure of PI, TVI and cardiac trasvalvular flows). T raditional technique was integrated and comparated to the tridimensional and quadridimensional ones. Ultrasound 3D machines acquire a single volume of voxels by a sweep of ultrasound troughout the interest area, and this allows the 3D approach for the study of non-vascular structures. This provides a static image. The 4D technology adds movement and in particular the STIC software (Spatio-Temporal Image Correlation) allows to obtain a sequence of a single cardiac cicle, like a bidimensional examination in real time. Adding color is useful to verify the cardiac flows and the presence ofe several abnormalities. 4D Power Doppler use allowed study of placental vascularization indices like vascularization index (VI), flow index (FI) e vascularization flow index (VFI). The VOCAL software was used to study the volume of a tissue, organ or cavity (for exemple the whole placenta or cardiac cavities) producing a sequence of several sections of the heart, each obtained after a rotation from the previous one. In each plane the contour was traced manually, and at the end, the computer provided the reconstruction of the ventricle and calculated its volume. To detect cardiac malformations such Trasposition of the great arteries we used the SonoVCAD software (Sonographically based Volume Computer-Aided anaLysis) that automatically retrieves diagnostic cardiac planes from a 4-dimensional volume of the fetal chest obtained with spatiotemporal image correlation (STIC). We finnally concluded that the 3D/4D technique provides several benefits, because the study of the volumes is possible offline, after sacnning and can be repeated by different operators or several times by the same operator, giving the possibility of double-blinded studies. The automatic approach shows good retrieval of diagnostic cardiac planes in fetuses with TGA, which may improve diagnostic efficacy for this disease. There is a good agreement between SV measured either by 2D Doppler or by 4D STIC. The 4D STIC represents a simple and rapid technique to estimate fetal SV and promises to become the method of choice. The combination of abnormal uterine artery Doppler and low placental volume at 11–14 weeks achieves better results than does either test alone in the prediction of pre-eclampsia. We provide normal ranges of placental vascular indices between 11 + 0 and 13 + 6 weeks of gestation, which may be useful in future research on placental vascularity in certain at-risk pregnancies. Additional studies are needed to further validate these methods and it’s very important to remember that to obtain a quality volume we need to have a good bidimensional image.
Martínez, Aspas Ana. "Diagnóstico y control evolutivo de las circulares de cordón en el primer trimestre de gestación mediante ecografia 3D/4D y dopller." Doctoral thesis, Universitat de València, 2011. http://hdl.handle.net/10803/81867.
Повний текст джерелаWe have proposed a study on the circular cord, based on the diagnosis of nuchal cord on first trimester of gestation, and progress monitoring and prognosis of these cases, obtaining the following results: 1.- We have established the incidence of nuchal cord on the first trimester of pregnancy with three-dimensional and Doppler ultrasound, this being 25.3%, presence of a circular in 18.7%, 2 in 6% and only 3 in 0.7%. 2.- In the subsequent ultrasound scans, there are circular in 16.8% in week 20 and 18.2% in week 32 and at the time of birth in 29.3% of deliveries. 3 .- On the termination of pregnancy type of vaginal deliveries predominate 82.6%, with a cesarean rate of 16%, but among them only 1.3% the indication was suspected fetal welfare loss. And we have deaths in 1.3% (2 cases) in weeks 13 and 25, both with 2 circular cord tight, as the only finding. 4 .- There is significant correlation between the presence of nuchal cord around the fetal neck in the first quarter and then in weeks 20, 32 and childbirth, but the circular first quarter did not correlate with worse perinatal outcomes, except that persist throughout the pregnancy. 5.- The presence of nuchal cord at 20 and 32 weeks correlate with lower pH values (the higher number of circulars, worse cord pH). 6 .- There is a statistically significant correlation with the number of circular labor, the umbilical cord pH, Apgar score, and type of completion of delivery. 7 - By relating the presence of circular cord along the pregnancy with changes in the cardiotocographic record, we found no statistical differences.
Di, Lorenzo Giovanni. "Analisi dei movimenti fetali come indicatore relazionale in gravidanze gemellari mono e bicoriali." Doctoral thesis, Università degli studi di Trieste, 2014. http://hdl.handle.net/10077/9984.
Повний текст джерелаLo studio ecografico 4D dei movimenti fetali in gravidanze singole dimostra patterns cinematici con finalità d’azione a partire dalla 22a settimana di gestazione. Un successivo studio su gravidanze gemellari dimostra non solo l’anticipazione della pianificazione motoria dalla 14a settimana, ma anche che il movimento verso il co-gemello non è accidentale, suggerendo che la propensione all’azione socialmente orientata è presente prima della nascita. La presente ricerca è rivolta al confronto ecografico 4D dei movimenti fetali in gravidanze gemellari mono versus bicoriali fino alla 20a settimana (limite tecnico per osservare i movimenti presi in considerazione) e al successivo follow up dei profili di movimento delle stesse coppie di gemelli fino al sesto mese di vita. È stata inoltre valutata la nascita della genitorialità in base all’analisi delle rappresentazioni genitoriali durante e dopo la gravidanza. I partecipanti sono 20 feti: 10 gemelli monocoriali e 10 gemelli bicoriali, con stato clinico di buona salute e 10 madri sane. Lo studio è composto da 2 parti: 1) Osservazione di movimenti fetali videoregistrati secondo un campionamento a frequenze ripetute e fisse, ogni 15 giorni per un periodo di 30 minuti dalla 14a alla 20a settimana di gestazione e poi dopo la nascita fino al sesto mese di vita; 2) Interviste semi strutturate alla coppia con differenti test psicologici. Le videoregistrazioni hanno permesso di rilevare la frequenza dei movimenti dei feti verso se stessi, verso il co-gemello e verso l’esterno (parete uterina e cordone ombelicale). Diversamente, le interviste ed i test psicologici sono stati esaminati nei contenuti emotivi e relazionali dei futuri genitori ai fini di stabilire la qualità del modo di stare in relazione con i propri bambini e lo stile di attaccamento manifestato prima e dopo la nascita. Lo studio è stato finalizzato all’identificazione di eventuali differenze dei profili di movimento tra i co-gemelli in base alla corionicità al fine di fornire importanti informazioni nella comprensione dei fattori che in utero influenzano lo sviluppo dell’intenzionalità e della motricità finalizzata. Una risposta all’obiettivo principale dello studio è stata trovata dimostrando l’esistenza di una reale differenza d’interazione tra i co-gemelli mono e bi-coriali tra la 14a e la 20a settimana di gestazione. Inoltre, abbiamo dimostrato come la nascita della socializzazione in utero nasca già dalla 14a settimana, mostrando una maggior propensione al “movimento sociale” da parte delle gravidanze monocoriali, mantenendo un comportamento costante durante le settimane osservate. Non altrettanto fanno i gemelli bicoriali, questi ultimi, infatti, mostrano uno sviluppo costante del movimento sociale tra la 14a e le 20a settimana di gestazione sovrapponendosi ai fratelli monocoriali solo dalle 20 settimane, come se lo sviluppo di un piano motorio volto all’interazione sociale si sviluppi più tardivamente nei gemelli bicoriali. Sarà importante chiarire questi aspetti sullo sviluppo della socializzazione poiché i modelli sociali, anche pre-natali, potrebbero essere marcatori precoci della comparsa di disturbi dello sviluppo che riguardano la dimensione sociale del comportamento, come ad esempio i disturbi pervasivi dello sviluppo. Per tali motivi è importante continuare e approfondire questo filone integrandolo con studi di cinematica fetale, per imparare a conoscere meglio e a riconoscere precocemente tali marcatori.
XXVI Ciclo
1978
Simó, González Marta. "Evaluación mediante ecografía 4D de la avulsión del músculo elevador del ano en pacientes con desgarro obstétrico del esfínter anal. Incidencia y significación clínica de su lesión asociada." Doctoral thesis, Universitat Autònoma de Barcelona, 2014. http://hdl.handle.net/10803/284360.
Повний текст джерелаThe pelvic floor is a complex structure of muscles, ligaments and connective tissues that has a vital function in the life of women. Disorders of this structure affect millions of women worldwide and in recent years such conditions have been linked to vaginal delivery. The pathophysiological mechanisms involved in this effect, however, are not fully known. The aim of this thesis was to investigate some of the complex mechanisms and relationships between the structures of the pelvic floor during childbirth. We analysed the relationship between two complications of vaginal birth that can cause sequelae in terms of pelvic floor disorders: obstetric anal sphincter injury and avulsion of the levator ani muscle. We conducted an observational, prospective cohort case-control study in 80 patients who gave birth at Hospital de la Santa Creu i Sant Pau in Barcelona between September 2011 and July 2013. Inclusion criteria for the study group were first vaginal delivery and obstetric sphincter anal injury. Inclusion criteria for the control group were first vaginal delivery but no obstetric sphincter anal injury. Both groups included 40 women, matched according to type of vaginal delivery (spontaneous, vacuum, Thierry spatulas or forceps) and neonatal birth weight. The principal investigator was blinded to clinical data and group allocation. We performed 4D transperineal ultrasound in all women in both groups and analysed the differences in the incidence of levator ani muscle avulsion. We did not find any statistically significant differences in the incidence of avulsion of the levator ani muscle between the two groups. Our results support the hypothesis that obstetric anal sphincter injury and levator ani avulsion are not mutually dependent risk factors; rather, these two childbirth complications share other risk factors that might be highly determinant for both conditions. Our results therefore suggest that the anatomical proximity of the anal sphincter and the levator ani leads them to function together within the complex interaction of biomechanical mechanisms during vaginal delivery. In conclusion, our findings emphasize the need for professionals involved in the childbirth process to be aware of the risk factors and consequences of obstetric anal sphincter injury and levator ani avulsion. Such knowledge will help to promote implementation of measures that optimize care during delivery and take into account an integrated concept of health and quality of life for women in the short, medium and long term.
Частини книг з теми "Ecografia 4D"
Kurjak, A., and J. M. Carrera. "Ecografía 3D y 4D en diagnóstico prenatal." In Ecografía en diagnóstico prenatal, 85–92. Elsevier, 2008. http://dx.doi.org/10.1016/b978-84-458-1845-9.50005-0.
Повний текст джерела